High Voltage, Low Noise, Low Distortion,

Unity-Gain Stable, High Speed Op Amp

Data Sheet

ADA4898-1/ADA4898-2

FEATURES

Ultralow noise

0.9 nV/√Hz

2.4 pA/√Hz

1.2 nV/√Hz at 10 Hz

Ultralow distortion: −93 dBc at 500 kHz

Wide supply voltage range: ±5 V to ±16 V

High speed

−3 dB bandwidth: 65 MHz (G = +1)

Slew rate: 55 V/µs

Unity gain stable

Low input offset voltage: 160 µV maximum

Low input offset voltage drift: 1 μV/°C

Low input bias current: −0.1 µA

Low input bias current drift: 2 nA/°C

Supply current: 8 mA

Power-down feature for single 8-lead package

APPLICATIONS

Instrumentation

Active filters

DAC buffers

SAR ADC drivers

Optoelectronics

CONNECTION DIAGRAM

PD

8

7

6

NC

5

NC = NO CONNECT

TOP VIEW

(Not to Scale)

ADA4898-1

Figure 1. Single 8-Lead ADA4898-1 SOIC_N_EP (RD-8-1)

8

7

–IN2

6

+IN2

5

ADA4898-2

TOP VIEW

(Not to Scale)

Figure 2. Dual 8-Lead ADA4898-2 SOIC_N_EP (RD-8-2)

GENERAL DESCRIPTION

The ADA4898-1/ADA4898-2 are ultralow noise and distortion,

unity gain stable, voltage feedback op amps that are ideal for use in

16-bit and 18-bit systems with power supplies from ±5 V to

±16 V. The ADA4898-1/ADA4898-2 feature a linear, low noise

input stage and internal compensation that achieves high slew rates

and low noise.

With the wide supply voltage range, low offset voltage, and wide

bandwidth, the ADA4898-1/ADA4898-2 are extremely versatile,

and feature a cancellation circuit that reduces input bias current.

The ADA4898-1/ADA4898-2 are available in an 8-lead SOIC

package that features an exposed metal paddle to improve power

dissipation and heat transfer to the negative supply plane. This

EPAD offers a significant thermal relief over traditional plastic

packages. The ADA4898-1/ADA4898-2 are rated to work over

the extended industrial temperature range of −40°C to +105°C.

FREQUENCY (Hz)

1

0.1

1

10

0.1

1

10

10

100

1k

10k

100k

CURRENT

VOLTAGE

Figure 3. Input Voltage Noise and Current Noise vs. Frequency

Rev. E

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